Machine for grooving wood heels



Dec. 27, 1927. 1,653,932 W. J. SHAW murmur: r01! oxoqvme woon HEELS Filed July 16. 192:; 4 Sheets$heet? 17" Dec.. 27. 1927 1,653,932

W. J. SHAW MACHINE FOR GROOVIHG WOOD HEELS Filed July 15. 1923 4 Sheets-Sheet 3 6 \m' if 1,653,932 w. J. $HAW IAQHINE FOR GROOVIXG WOOD HEELS Filed July 16. 1923 4 Sheets-Sheet 4 Z7}; .9 J0

war w Patented Dec. 27, 1927.

UNITED STATES PATENT OFFICE.

WESLEY J. SHAW, OF HAVEBHILL, MASSACHUSETTS, ASSIGNOR T0 NEW ENGLAND WOOD HEEL .00., OF HAVERHILL, MASSACHUSETTS, A CORPORATION OF MASSA- CHUSETTS.

MACHINE FOR GROOVIlQ' G WOOD HEELS.

Application am July 16, 1923. Serial No. 651,966.

The present invention relates more particularly to machines for grooving ,wood blocks intended to be manufactured into wood heels. Some features of the invention are, however, of more general application.

The nature and the objects of the invention will be better understood in connection with the accompanying drawings, in which Fig. 1 is-a diagrammatic view, in front ele vation, illustrating one embodiment of the invention; Fig. 2 is a plan of the same, with I parts omitted for clearness; Fig. 3 is a plan of a detail, shown enlarged with respect to Figs. 1 and 2; Fig. fl is a similarly enlarged elevation, partly in section, of the extreme left-hand portion of the machine, as viewed iii Figs. 1 and 2; Fig. 5 is a transverse vertical section taken upon the line 55 of Fig. 3, looking in the direction of the arrows; Fig. 6 is a similarly enlarged view, partly in elevation, and partly in transverse vertical section along the line 6-6 of Fig. 2, looking in the direction of the arrows; Fig. 7 is a section taken upon the line 77 of Fig. 3, looking in the direction of the arrows, shown enlarged with respect to Fig. 6; Fig. 8 is a perspective view of a Wood-heel block; Fig. 9 is a front elevation, partly in section, of a detail, the scale being the same as in Fig. 6; and Fig. 10 is a similarly enlarged elevation, partly in section upon the line 10-10 of Fig. 9, looking in the direction of the arrows.

The machine that has been-chosen to illustrate the invention, as required by the statutesyis adapted to operate upon wood-heel blocks 2. 'One such block is illustrated in Fig. 8 as provided with upper and lower oppositely disposed faces and two side oppositely disposed faces. To start with, before it is operated upon in the illustrative machine, it has the shape indicated by the dotted lines 4. Blocks of this shape are placed upon an endless carrier 6, with a portionthereof projecting at one side of the carrier and are advanced by the carrier to a rotating cutter 8, by which the projecting portions of the blocks are successively out along the dot-and-dash lines 10, shown in Fig. 8. The carrier 6 continues to advance the blocks to a second cutter 12, which cuts the full-line groove 145 Fig. 8. The groove ltmay, of course, be cut in one step instead of two, but it isfound better, in practice, to groove the block in at least two The endless carrier 6 comprises a plurality of links 16 connected by pintles 18 that are adapted to be engaged by teeth 20 of a driving wheel 22 over which the carrier 6 is mounted. The driving wheel 22 may be driven from any desired source of power (not shown). The driving wheel 22 is shown in Figs. 1 and 2 at the left-hand end of the machine. The carrier 6 is mounted also over an idler wheel 24 at the right-hand end of the machine. The idler wheel '24 is provided with a circular periphery and with flanges 26 between which the links of the carrier 6 are confined. The periphe of the driving wheel 22, however, is fiat-s ded, as. shown more particularly in Figs. 1 and 4:, in order that the links 16 may rest snugly,

against the sides thereof while the teeth 20 tion than if the carrier dragged over a.

solid bed bottom. The substantially straight tracks 28 and 30 ensure that the portion of the path of travelof the carrier between the driving wheel22 and the idler wheel 24 shall be substantially straight. In order to prevent vibration of the carrier during its travel, it is confined on one side between the track 28 and a ledge 34, and on the other side between the track 30 and a ledge 36. The ledges 34 and 36 may be secured to the frame of the mahine in any desired manner, as by means of screws 37, Fig. .5.

The blocks must, of course, be firmly clamped in position during theirtravel-to and by the cutters. According to the pre-. ferred embodiment of the present invention, the clamping is efleoted by means of clamping jaws that are mounted upon the carrier .so as to move with the carrier. The clamptween each'cooperating pair of jaws. Two

jaws are mounted upon each link of the car rier, each jaw being one of a pair of cooperating jaws, the other jaw of each pair being mounted one on each adjacent link. As the pairs of jaws are substantially alike, it will suffice to describe one pair of aws only.

Each cooperating pair of jaws comprises one jaw 38 that is stationary with respect to the carrier 6, and one jaw 40 that is movable with respect to the carrier in the direction of the pathv of travel of the carrier. The jaws 38 and 40 are normally separated.

from each other by a distance greater than the width of a heel block, and the movable jaw is moved towards the stationary jaw to clam the block between them. Referring to F1 3, for example, the movable jaw 40 that is mounted upon one link 16 may be moved along the said one link 16 towards the stationary jaw 38 that is mounted upon the next adjacent link 16 to effect between them the clamping of a block that is resting on the carrier. In the specific embodiment of the invention that is herein illustrated and described, this is effected by means of a wedge 42, acting upon a wedge face 44 that is provided upon the rear side of the jaw 40. By forcing the wedge 42 transversely to the direction of travel of the carrier, the jaw 40 may be forced towards the jaw 38.

The movable jaw 40 is adapted to be actuated towards the stationary aw 38 to effect the clamping of the block- 2 between the jaws by an arm 46 that is mounted upon the wedge 42, and that extends beyond and to one side of the carrier, in substantially the plane of the substantially straight path of the carrier, as is illustrated more particularly in Fig. 5. The actuation is effected automatically during the travel of the carrier, and at a time when the jaws 38 and 40 are positioned along the substantially straight portion of the path, by a cam 48 that is adapted to be engaged by a roller 50 at the free end of the arm 46. The cam 48 is located to one side of the carrier, as will be understood by referring more particularly to Fig. 2, at a predetermined position in the path of travel of the carrier in advance of the cutter 8, such that the clamping effect may be obtained after the block has been placed upon the carrier, and before it has een advancedto the cutter 8. The cam 48 is shown as an inclined plane. During the travel of the carrier from right to left, as viewed in Fig. 2, at a predetermined position in advance of the cutter 8, therefore, the arm 46 is pressed gradually transversely inward towards the carrier, causing the wedge 42 to force the .movable jaw 40 towards the stationary jaw 38, and causin the block 2 to become clamped between the aws, as before described. By the time that the block has been advanced as far as the cutter 8, therefore, it has become firmly clamped in position upon the carrier.

A wall 52 that forms an extension of the cam 48 maintains the arm 46 in position, to maintain the block clamped between the 'aws, until after the block has been advanced eyond the cutter 12. An outwardly diverging cam 54 of the wall 52, located at a predetermined position beyond the cutter 12, permits the arm 46 to return graduallly to its normal position, and the jaws to re ease the block. Thou h the jaws move with the carrier on both t e upper and lower levels of the carrier, therefore, theyl are ositioned in clamping engagement wit the 1681 block during their travel only between limits on the upper level. The angle that the cam 54 makes with the'wall 52 is less abrupt than that made by the cam 48, in order'not to permit the jaws to unclamp the block too suddenly after the block has been acted upon by the cutter.

As the blocks 2 are not all of the same dimension, provision should be made for advancing the jaw 40 sometimes a little farther towards the jaw 38 and sometimes not quite so far. Blocks of different thickness will, in that manner, be clamped with e ual effectiveness. To bring about this resu t, according to' the preferred embodiment of the present invention, the arm 46 is not ri id with, but is slidable upon, the wedge 42, ut

is maintained in nearly rigid relationship therewith by a stiff coil spring 56 that causes the roll 50 to ride along and in engagement with the wall 52. The arm 46 extends through the coil spring 56. One end of the spring bears against a shoulder 58 of the arm 46, and the other end bears against a plate 59 of the wedge 42. The arm 46 is thus maintained pressed outward, as is illustrated more particularly in Fig. 5. The arm 46 extends through the plate 59, and itsinner portion 60 is adapted to slide, piston-like, in a bore 62 of the wedge 42, in opposition to the force exerted by the spring 56. An annular shoulder 63 of the portion 60 of the arm 46 engages the plate 59 to prevent the arm 46. becoming separated from the wedge 42. This construction permits the cam 48 not only to advance the Wedge 42, but to compress the spring 56, more or less, as well, thereby providing for clamping blocks of different thickness. The spring action is more gradually released when the roll 50 reaches the cam portion 54 of the wall 52 than it is rendered effective by the cam 48,-

so that the aws are resiliently released from the blocks less suddenly than they are clamped, as before described. The clamping action is positive, notwithstanding the use of the spring 56, because of the abovedescribed, nearly rigid relationship between the arnr46 and the wedge, 42,

The wedge 42 is confined against up-anddown movement, and is guided in its transverse movement across the link 16 of the carrier 6 upon which it is mounted, by a plate displaced from under the 64 that is parallel to the link 16. The plate 64 is shown secured to the body portion of one jaw 38 of another pair of jaw s38, 40. by screws 66. The said jaw 38 is secured, in its turn, to the corresponding link, by a screw 68, Fig. 5. The under side of the plate 64 is integrally provided with a diagonally extendingrib 70, Fig. 4, that fits into a corresponding groove 72 provided upon the upper face of the wedge 42, to uide the trans-' verse movement of. the we ge 42. An upstanding screw 74is ada 'ted' to engage a projecting lug 7 6 of the p ate 64 to prevent the wedge .42 from accidentally becoming movable jaw is also slidably confined between the link 16"a'nd the plate 64.

. Not only do the blocks 2 vary'in thickness, but their thickness is not always uniform, being sometimes thicker at the bottom,

for example, than at the top. To secure afirm clamping action notwithstanding this kind of variation, the jaws38 and 40, or

. either of them, may be provided with selfalining clamping faces 78, shown more particularly in Fig. 7. The clamping faces 78 comprise plates freely pivoted at 80 in grooves 82 of the jaws upon which they are mounted. When the movable jaw 40 is forced towards the stationary jaw 38, therefore, the self-alining clamping face or faces 78 will automatically grip the block 2 throughout the hei ht of the block, whether the sides of the bloc are upright orinclined. In order to provide for a more secure gripping action, the clamping faces 78 are provided with teeth 84. v

The position of the groove 14 uponthe block 2 will depend upon the height of the .cutters. The cutters should be situated substantially in the'plane of movement of, and

to one side of the path of travel of, the jaws, or slightly above the links, at intermediate positions of the carrier 6, as illustrated more particularly in' Fi 7.

.The cutters are mounted upon spind es 86 that rotate in bearings 88 and 90 and are driven by motors 92.

The spindles 86, bearings 88 and 90 and mo-' tors 92 are mounted as a unit upon plates 94, and the plates are vertically adjustable. The plates 94 may be secured in vertically adjusted position by bolts 98 extending through elongated openings 100. The vertical adjustment may be facilitated by hand wheels 102 secured to threaded "stems 104 that extend through lugs 106 in the frame ofthe machine and that engage the plates 94.

In order to control accurately the position of the groove 14'upon the block 2, it is also necessary to have the block restsnugly on the carrier. If the block is raised even slightly above the carrier, the groove will he out too low. Provision is therefore made 1 for holding the block tightly against the caragainst the block. The the shoe108' is bevelled,

plate 64. The

rier during the. clamping movement of the movable jaw 40.

-To this'end, the block 2, after it has been positioned on the carrier, is caused to travel under a shoe 108 that presses down firmly forward portion'of as shown more par.- ticularly at 110, Fig. 9, so that the block may enterthe'reunder the more readily. As

the block is carried forward by the carrier, it is caused to travel under the shoe. The movable jaw. is caused to clamp the block at this time; At the time that the block is presented to the cutter, therefore, it is held snugly atits'lower and upper faces both below and above-the cutter, and is at the same.

time clamped between the jaws at its two side faces, the cutter acting at a point intermediate between the carrier below and the shoe above, and to one side of the carrier and theshoe; During the further advance the shoe is no longer needed, and the carrier therefore advances the block beyond the range of action of the shoe, so as to cause the shoe to release the block, The shoe continues its holding action, however, until after the cutter has cut the groove, so that the block is at this time clamped on all four sides. Two shoes 108 are provided, one for each of the cutters, as will be clear from the showof the blockby the carrier, after the block has become clamped, the holding action of desired manner,

tically yieldable, in opposition to the action of a coil spring 118, in order to allow for blocks of different height. The plunger is mounted upona framework 120 that-is vertically adjustable b means of a. handwheel 122. Transverse a justment may be effected by means of a handwheel 124 that is adapted to control the transverse adjustment of a slide 126 that carries the framework 120, as

shown more particularly in Fig. 10.

The pivotal movement of the shoe 108 about the pivotal point 114 is yieldingly resisted by two coil springs 128 and 130 mounted between the framework and the shoe on each side of the pivot. When a block is forced under the shoe, t-hespring 128 is first compressed. The spring 130 is compressed" later, as the block is advanced be yond the shoe. The spring-118 is called into play for blocks of extra thickness.

N o attempt is made herein to illustrate or describe the many changes and modifications within the spirit and scope that may be made Such modifications and tion is not restricted thereto, but is defined link, means for actuating by the appended claims. It is intended to cover in the appended claims all the novelty that the invention may possess, and it is therefore desired that the claims be broadly construed, except in so far as it may be necessary to impose limitations because of prior art.

What is claimed is: I

1. A machine of the class described having, in combination, a carrier comprising a plurality of links, two clamping jaws mounted u on each link of the carrier so as to move with the carrier, one of each of the said two jaws bein stationary with respect to the carrier an the other of-each of the said two jaws being movable with respect to the carrier towards the stationary jaw upon another the carrier along a path a portion of which is substantially straight, and means situated at one side of the carrier in substantially the plane of the ath and operable dursubstantially straight ing the actuation of t ecarrier to move the movable jaws towards the corresponding stationary jaws to eflect the clamping of blocks between the jaws, whereby the carrier is adapted to advance clamped blocks, the lastnamed means being operable to move the movable jaws towards the corresponding stationary jaws when the movable jaws are positioned along the substantially straight portion of the path.

2. A machine of the class described having, in combination, a cutter, an endless carrier comprising a plurality of links, clamping jaws mounted in pairs upon the carrier so, as to move with the'carrier, one of the jaws of each pair being stationary with respect to the carrier and the other jaw of each pair be i movable with respectto the carrier in the direction of the path of travel of the carrier and having a wedge face, a. wedge adapted to engage the actuation ofthe movable jaw, means for actuating the carrier, and means operable during the actuation of the carrier to actuate the wedge against the wedge face to eflect the clamping of a blockbetween the jaws,

whereby the carrier. is adapted to advance a-clamped block tothe cutter.

3. A machine of the class described having, in combination, a cutter, an endless carrier com rising a, plurality of links, two clamping aws mounted upon each link of the car'- rier so as to move with the carrier, one of each of the said two jaws being stationary with respect to the carrier and the other of the wedge face-to effect each of the said two jaws being movable upon the link upon which it is mounted in d the direction of the path. of travel of the carrier towards the stationary jaw upon an other link, the movable jaw having a cam face, a cam adapted to engage the cam face to effect the actuation of the movable jaw having an arm, means for actuating the carrier, means operable during the actuation of the carrier for engaging the arm to effect the clamping of a block between the movable jaw and the said stationary jaw upon the said other link, whereby the carrier is adapted to advance a clamped block to the cutter, and means operable during the actuation of the carrier for unclamping the block after the block has been acted upon by the cutter.

4. A machine of the class described having, in combination, a cutter, an endless carrier comprising a plurality of links for advancing blocks to the cutter, a jaw fixed upon each link, a jaw movably mounted upon each; link and adapted to clamp a block against a stationary jaw of another link the cutter bein situated at an intermediate position of t 1e carrier in the plan'e of movement of the carrier, means for actuatin the carrier, means situated at one side 0% the carrier at a predetermined position in advance of the cutter for actuating the movable jaws of each link to clamp blocks a ainst the stationary jaws of the said other inks, whereby the blocks are clamped when they are advanced to the cutter, and means operable. at a predetermined positioned beyond. the cutter for actuating the mbvable jaws to unclamp the blocks after the blocks have been acted upon by the cutter.

5. A machine for grooving heel blocks having, in combination, a carrier, clamping jaws mounted upon the carrier so as to move with the carrier, means for actuating the carrier, means for relatively moving the jaws in the direction of the path of travel of the carrier so as to cause a heel block resting on the carrier to become clamped between the jaws, means between WhlOh and the carrier the block is firmly held against the carrier durin the relative movement of the jaws, and a eel-block-grooving cutter situated at one side of the path of travel of the clamping jaws intermediately between the last-named means and the carrier, whereby the carrier is adapted to advance to the cutter a heel block resting snugly upon the carrier and clam ed between the jaws, and the cutter is a apted to out a groove in the blockat a point at one side of the carrier and the said last-named means.

6. A machine of the class described havin combination, a cutter, a carrier, clamping jaws mounted upon the carrier so as to move with the carrier, means for actuating the carrier along a path a portion of which is straight, means situated at one side of the carrier in substantiall the plane of the substantially straight path and operable during the actuation of the carrier when the jaws are positioned along the substantially straight portion of the path for relatively moving the jaws in the direction of the path of travel of the carrier so as to cause a block resting on the carrier to become clamped between the jaws, and means for holding block against the carrier during the said relative movement of the jaws, whereby the carrier is adapted to advance to the cutter a block resting snugly upon the carrier and clamped between the jaws.

7. A machine ofthe class described having, in combination, a cutter, a carrier, clamping jaws mounted. upon the carrier so as tomove with the carrier, means for actuating the carrier along a path a portion of which is substantially straight, means situated at one side of the carrier in substan tially the plane of the'substantially straight path and operable at a predetermined position in advance of the cutter when the jaws are positioned along the substantially straight ortion of the path for relatively moving t e jaws in the direction of the path of travel of the carrier soas to cause a block resting on the carrier to become clamped be tween the jaws, means for holding the block against the carrier during the'said relative movement of the jaws, the holding means being adapted to release the block after it has been clamped between the jaws, whereby the carrier is adapted'to advance to the cutter a block resting snugly upon the carrier and clamped between the jaws, and means operable at a predetermined position beyond the cutter for unclamping the blockafter it has been acted upon by the cutter.

8. A machine for grooving heel blocks having, in combination, a heel-block-groov-- ing cutter, a carrier, clamping aws mounted upon the carrler so as to move with the carrier, one of the aws being movable 1n the direction of the path of'travel .of thecarrier to effect the clamping between the jaws of a heel block resting. on the carrier,

the said jaw having an arm'extending beyond and to one side of the carrier, means for actuating the carrier, means located at a predetermined position in the path of travel of the carrier for engaging the arm to effect the clamping movement of the jaw, and means for firmly holding the block against the carrier during the said clampmg movement of the jaw, the holding means being adapted to release the block after it has been clamped between the jaws, whereby the carrier is adapted to advance to the cutter a heel block resting snugly upon the carrier and clamped between the jaws.

9. A machine of the class described having, in combination, a carrier, clamping ing the relative movement the jaws mounted upon the carrier so as to move with the carrier, the jaws being relatively movable in the direction of the path of travel of the carrier so as to clamp between them a block resting on the carrier, a shoe for holding the block against the carrier dur-- of the jaws, and a yielding plunger upon which the shoe is pivotally mounted. 10. A machine as defined in claim 9 in which means is provided for yieldingly resisting pivotal movement of the shoe.

11. A machineas defined in claim 9 in which the shoe is provided with a spring arm on one side of the pivot.

12. A machine for grooving heel blocks having, ing cutter, a carrier for advancing heel in combination, a heel-block-groov-'- blocks to the cutter, clamping jaws between which a heel block advanced by the carrier is adapted to be clamped, a spring, means oper-' able as a predetermined position in advance of the cutter and operable through the spring to positively effect the clamping of the block betweenthe' jaws, meansoperable at a predetermined positionbeyond the cutter for releasing the spring and thereby unclamping the block after it has been acted upon bythe cutter, and means whereby the operation of the second-named means upon the spring is rendered more gradual than the operation of the first-named means whereby the jaws are released from the block less suddenly than they are clamped.

13. A machine of the class described having, in combination, a cutter, a carrier,

as to move with the carrier, the jaws being relatively movable in thedirection of the path of travel of the carrier to effect the clamping of a block between the jaws, an arm extending beyond and to one side of the carrier, means for actuating the carrier, a spring, a cam located at a predetermined position in the path of travel of the carrier for engaging the arm to effect the relative clamping movement of the jaws in opposition to the force exerted by the spring, and a cam located at a predetermined position beyond the cutter against which the spring is adapted to cause the arm to ride for effecting the unclamping of the jaws, the an le made by the second-named cam with the l ne of travel of the carrier being less than that made by the first-named cam.

14. A machine of the class described having, in combination, a cutter, a carrier for advancing blocks to the cutter, a jaw stationary with respect to the carrier, a jaw movably mounted upon the carrier to move in the direction of the path of travel of the carrier to clamp a block against the stationary jaw, the movable jaw having'a cam face, anarm connected to the movable jaw extending beyond and to one side of the. carrier with teeth for clamp having, in combination, a heel-blocks respect to the carrier an and having a cam adapted to engage the cam face to efiectthe actuation of the movable jaw, means for actuating the carrier, and means located at a predetermined position in the path of travel of the carrier for engaging the arm to efiect the clamping movement of the movable jaw, the arm being movable with respect to the movable jaw, and the arm and the movable jaw being snring-connected together to efiect the clamping of blocks of varying dimensions, the spring connection permitting the return of the movable jaw when the arm is ad.-

vanced beyond the predetermined position.

15. A machine of the class described having, in combination, a cutter, an endless carrier for advancing blocks to the cutter, a plurality of jaws stationary with respect to the carrier, a plurality of 'aws movable with each adapted to clamp a block against one of the stationary Laws, the stationary and the movable jaws sing mounted upon move with the carrier, means for actuating the carrier, camsmovable upon the carrier for actuating the movable jaws, means operable at'a predetermined position in advance of the cutter for actuating the cams to efiect the actuation of the movable jawsto clamp blocks against the stationary aws, having self-alining clamping faces provided ing the blocks lrrespective of the dimensions of the blocks, and plates for confining carrier and the plates of the cams upon the-carrier.. v j 4 16, A machine for grooving heel blocks a carrier comprising a plura 'ty of in cutter,

heel-blockclamping jaws mountli s, two ed upon each link of the carrier. so'as move with the carrier, one of each of the said two jaws being stationary with respect to the carrier and the other of each of the being movable with respect said two jaws towards the stationary aw to the carrier upon another link, the movable jaw having carrier to actuate the cam resting snugly upon the carrier having, in combination, a

mounted upon each link of the carrier so as a cam face, a camadapted to engage the cam face to effect the actuation of the movable jaw, means for actuating the carrier, and means operable during the actuation of the face to efiect the clamping of a heel block between the jaws, whereby the carrier is ada ted to advance to the cutter a heel block and clamped heel blocks block-groova carrier com rising a plurality two. heel-bloc clamping jaws betiiyeefi the jaws. fv mac me or groovug ing cutter, of links,

to move with the carrier, one of each of the said two jaws being stationary with respect tothecarrierandtheotheroiecchoithe to the carrier the carrier and clamped the carrier so as to the awsthe cams between the.

during the movements clamped heel block, whereby against the cam said two jaws being movable with respect towards the stationary jaw upon another link, the said other jaw being normally separated from the said stationary jaw upon the a predetermined distance, means for actuating the carrier, and means operable during the actuation of the carrier to move each movable jaw towards the stationary jaw upon another link so as to diminish the said predetermined distance. thereby to effect the clamping of a heel block between the jaws, whereby the carrier is adapted to advance to the cutter a heel block resting snugly upon between the jaws. 18. A machine for grooving heel blocks having, in combination, a carrier, means for actuating the carrier, clamping jaws mounted upon the carrier, whereby the jaws are caused to travel with the carrier from one extreme limit of travel to a second extreme limit of travel, a heel block being adapted to be supported on the carrier between the .jaws with-a portion of the heel block projecting beyond the jaws at one side of the carrier, means for re atively moving the jaws in the direction of the path of travel of the carrier so as to cause the heel block to become clamped between the jaws with the said portion of the heel block project-' ing beyond the jaws at the said side of the carrier, and a heel-block-grooving cutter situated between the said limits of travel at the said side of the carrier in the path of travel of the said projecting portion of the the carrier is adapted to advance the said pirojecting por-' tion of the clamped heel bloc to the cutter and the cutter is adapted to cut a groove in the said projecting portion of the clamped to heel block.

,19. A machine for grooving "heel blocks having, in combination, a carrier, means for actuating the carrler, clampin jaws mounted upon the carrier, whereby t e 'aws are caused to travel with the carrier om one extreme limit of travel to a second extreme limit of: travel, a heel block being adapted to'be supported on the carrier between the jaws with a portion of the has block projecting beyond the jaws at one side of the carrier, one of the jaws having selfalining clamping faces, means for relatively moving the f aws in the direction of the pat of travelo the carrier soy-as to cause the heel block to become clamped between the self-alinin faces with the said ortion of the-heel b ock projecting beyon the ewe at the said side of the carrier, and a eelblock-grooving cutter situated between the said limits of travel at the said side of the said other link by more than carrier in the path of travel of the said heel blockto the cutter and the cutter is adapted to cut a groove in the said projectingportion of the clamped heel block.

20. A machine for grooving heel blocks having, in combination, a carrierymeans for actuating the carrier, at four-faced heel block being adapted to be supported on the carrier with a portion of the heel block projecting at one side of the carrier, two means for respectively engaging two opposite faces of the heel block, one of the means being adapted to press the heel block towards the other means to hold the heelblock firmly in position, means for engaging the other two block-grooving cutter situated at the said opposite faces of the heel block to clam 15 the heel block .on the carrier, and ahee side of the carrier in the path of travel of the said projecting portion of the clamped heel block, whereby the carrier is adapted to advance the said projecting portion of the clamped heel block to the cutter and the cutter is adapted to cut a groove in the said projecting portion of the clamped heel block.

In testimony whereof, I have hereunto subscribed my name this 13th day of July,

WESLEY J. SHAW. 

